Amnesty International provide some important steps how to protect you from cyber trolling: Threats of violence, discrimination, harassment, doxxing (disclosing personal or identifying documents), and the unauthorised sharing of sexually explicit and private images are just a few examples of the various ways that abuse can be committed online.
If any person harassing a woman through Internet, email or any other electronic communication is stated as an offence under Section 354D IPC
Sometime, perpetrators create fake account on face book to defame their victims and post morphed pictures to blackmail them